Bicycle



(No Model.) 4 I 2Sheets-Sheet 1. F. SGHRADER. BIGYGLE' Patented Feb. 4,1890.

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BIGYGLB Patented Feb. 4, 1890.

r w W m M m UNITED STATES PATENT OFFICE.

FREDERICK SCHRADER, OF PHILADELPHIA, PENNSYLVANIA.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 420,922, dated February4, 1890.

I Application filed November 26, 1389. Serial No. 331,650. (No model.)

T0 at whom it may concern:

Be it known that I, FREDERICK SOHRADER, a citizen of the United States,and a resident of Philadelphia, Pennsylvania, have invented certainImprovements in Bicycles, of which the following is a specification.

My invention consists of certain improvements in bicycles based on theimprovements set forth in the application filed by me on June 14,1889,Serial No. 31%,267.

My improvements mainly relate to the construction of the drivingmechanism, the object of my invention being to improve the clutchingmechanism to adjust for lost motion, to mount the rear of the frame onsprings, and to provide means by which the treadle can be attached tothe frame when used as a rest, substantially as herein set forth,reference being had to the accompanying drawings, in which- Figure 1 isa side View of sufficient of a bicycle to illustrate my invention. Fig.2 is a plan view of Fig. 1. Fig. 3 is a section on the line 1 2, Fig. 1.Fig. 4 is a longitudinal section of the clutch mechanism. Fig. 5 is asection on the line 3 4:, Fig. 4. Fig. 6 is a section of a modified formof clutch mechanism. Fig. 7 is a section on the line 5 6, Fig. 6. Fig. 8is a detached perspective view of the clutchpivot pin. Figs. 9, 10, and11 are views of a different form of adjusting mechanism, and Fig. 12 isa modification of the spring arrangement.

In the drawings I have omitted the front portion of the bicycle, merelyshowing the mechanism directly connected with my invention, and willrefer to the application above mentioned for details'not shown in thedrawings, although it will be understood that my invention can beapplied to tricycles as well as bicycles and t0 velocipedes in general.-

A is the yoke-frame of the machine, to the rear ends of which'arepivoted the bars B, carrying the bearings for the shaft 0, on which aremounted thehubs c of the rear wheel, which in the present instance isthe driving-wheel. Each pivot D also carries the foot-treadle lever E,having at its outer end a foot-rest for'the operators foot. This leveris kept in a raised position by the tension-spring F, which is hung onthe lever and is connected to the bar B by the link f. On the lever is asegment G, adjustably connected to the lever at its lower end, it beingslotted at g. Through this slot passes a bolt. The segment can be movedtoward or from the pivot D, and may be adjusted by a setscrew g on thelever E, which bears against a projection on the segment. The upper endof the segment is connected at g to an extension-rod G, which in turn isconnected to the rear end of the lever E. This segment is provided witha series of rack-teeth, which mesh with a pinion H, loose on a sleeve hon the shaft 0, and by the adjusting mechanism above described thesegmental rack can be moved toward or from the pinion.

Mounted on a rim of the pinion H is a casing I of the clutch mechanism,and screwed into this casing is a disk I, forming a space J, in whichrests the clutch-plate K, having bearing-lugs 7c is on each side, and inthe internal face of both the casing and the disk are gripping-surfacest i, forming an annular groove in each part I I. The gripping-lugs k onthe clutch-plate come in contact with the surfacest'z'. Thegripping-lugs it come in contact with the surfaces 2" v), thegripping-lugs 7a being forced up into position and the grippinglugs Itbeing forced down into position.

The clutch-plate is pivoted to a pin L, proj ecting from the'pinion ordriven part H, and

a pin 00 passes through a slot in the pinion,

and into a bearing in a split ring X, adapted to an annular groove in aplate W, of which the sleeve h in the present instance is a part. Thisplate is secured to a stationary part of the machine, as shown'clearlyin Figs. 4 and 5. The inner periphery of this plate is preferably linedwith rawhide no, so that when pressure is applied to the pinion the pincarried by the pinion will force the grippingplate in the direction ofthe arrow; but the spring-ring 00 will tend to keep the grippingplateback, owing to frictional contact with the rawhide, and thus force thegripping-lugs into engagement with the gripping-faces of the casing, sothat the shaft carrying the Wheel will be revolved; but on the returnmovement the pinion will be reversed and the plate will be drawn awayfrom frictional contact with the bearing-faces, owing to the frictionbetween the spring-plate X and its hearing, so that there is no uselesswear of the bearing-lugs against their bearing-faces when the pinion isreversed. At the same time the machine on which the clutch is mountedcan be run backward or forward without the intervention of the clutch.

The clutch mechanism maybe constructed as shown in Figs. 6, 7, and 8,the plate K being pivoted to a stud L, mounted in the pinion ]:l andformed as shown in Fig. 8, the portion Z having orifices adapted tocarry a spring Z, which rests against a lug k tending to press theclutch-plate in the direction of its arrow, Fig. 5, the portion Z andthe spring Z resting in the recess in the pinion. On the forward motionof the pinion the clutclrplate will grip the casing, and as this casingis secured to the shaft 0 it will turn the shaft forward; but on thereverse movement of the pinion the clutch-plate will not bite upon thecasing, but will slide therein. The pin is made right and left, so thatthe spring can be inserted on either side of the pin, depending on whichside of the bicycle the clutch is placed.

I prefer to secure the clutch-casing to the shaft in the mannerdescribed in the above application.

Situated between the frame A and the bar B on each side of the machineis a compression-spring M, mounted on a spindle N, pivoted at n to theframeA and passing through an enlarged orifice in the bar 13,011 whichare mounted suitable retaining-nuts n and an elastic washer 41 By thisarrangement there is a yielding connection between the shaft- 0 and theframe A.

The spring need not necessarily be mounted in the position shown inFigs. 1 and 2-as, for instance, the spring may be on a yokeframe N,attached at its lower end to a bar 13 on each side of the frame andadapted to slide in the frame at a point near the seat, as shown in Fig.12, the spring being mounted between the collar on the yoke and aprojection of the frame.

In order to rest the feet when coasting with this class of machine, Iform a series of projections e on the segment G, and I mount at 1), onthe frame A, a lever B. One arm 0' of this lever is hooked, as shown, toengage with one or other of the pins 6 on the segment, and the other arm7" is within easy reach of the operator, it being held in its normalposition by a spring q, mounted on the lever and resting upon a pin g onthe frame A, so that when the rider wishes to coast the rider pressesupon the arm a" of the lever by hisheel, forcing the hooked arm 7 of thelever in the path of the pins on the segment. The treadle-lever is thenpressed down by the toe until one of the pins engage with the hook,after which the heel can be released from the lever It, and the foot canrest solidly upon the treadle-lcver, said lever being suspended by thehooked lever.

By manipulating the hooked lever the treadle-lever can. be suspended indifferent positions, as the rider wishes.

The pivot-section I) is constructed in the following manner: The pivot(l is adapted to the forked end of the frame A, and passes through anorifice in the bar B and between the forked portions of the frame reststhe bar B. The pivot (Z has at one end a head (1, and is threaded at theopposite end, and on this threaded portion is mounted a nut (Z Passingthrough the pivot (Z is the pivotpin .9 of the treadle-lever E. Thispivot-pm has at one end a tapered shoulder s, and is threaded at theouter end, and to this threaded portion is adapted a nut 8 Secured tothe treadle-lever E is a tapered sleeve 2", mounted on the pin .9 andadapted to a tapered orifice in the pivot (Z, so that by tightening thenut s on the pin .9 the wear can be taken up on the lever. By thisadjustment, taken in connection. with the adjustment of the segment, asshown in Fig. 1, accuracy of fit and easy running are assured.

Instead of making the pivot-section as in Fig. 3, it may be made as inFigs. 9, 10, and 11, the frame A having an elongated slot a, in whichrests a block it, having a head M the block and the frame being tapered,as shown. By turning a set-screw v on the frame the block in the slot acan be adjusted. The block it carries the pivot-pin s of thetreadlelever E, so that it will be seen that by this arrangement theindependent adjustment of the segment 011 the lever may be dispensedwith and the lever adjusted longitudinally in its bearings.

By inclining the adjoining faces of the frame A and block a only oneset-screw need be used, as the inclined surfaces prevent the movement ofthe block in one direction, while the set-screw limits the movement ofthe block in the opposite direction.

I claim as my invcntion-- 1. The combination, in a bicycle, of theframe, the bar pivoted thereto, carrying the shaft 011 which is mountedthe wheel, with a spring situated between the frame and the bar,substantially as specified.

2. The combination of the frame A, the bar B, pivoted thereto, said barcarrying the axle on which is mounted the wheel, the spindle carried bythe frame and passing through the bar, with a spring mounted on saidspindle, substantially as described.

3. The combination of the frame, the treadlelever pivoted thereto, witha segmental rack mounted on said lever, said segmental rack beingmounted at its lower end, with a bolt passing through the said slot,substantially as described. L

t. The combination of the frame, shaft, pinion mounted thereon, with atreadle-lever pivoted to the frame, with an adjustable sag,- mental rackcarried thereby, with a set-screw 9, adapted to set the segmental rackon the lever, substantially as described.

5. The combination of the frame, treadlelever pivoted thereto, withalever R, pivoted to the frame, one arm 0" of said lever being hookedand adapted to engage the treadlelever, and the other arm 1" being inposition to be operated by the foot of the rider, with a spring tendingto keep said lever R in its normal position, substantially as and forthe purposes set forth.

6. The combination of the frame, treadlelever pivoted thereto, segmentalrack mounted on said treadle-lever, 'havin g one or more pins, with ahooked lever mounted on the frame, adapted to suspend the treadle-leverthrough the medium of the pins and segment, substantially'as described.7

7. The combination, in a clutch, of the clutching-faces, the diskadapted to bear upon the same and pivoted to the driving mechanism, aspring-ring resting in a non-revolving plate, with a pin projecting fromsaid disk into said ring, substantially as described.

8. The combination, in a clutch, of the gripplate having gripping-lugs7c 70, with acasing having inclined bearing-surfaces 7; '6, againstwhich the lugs bear, with mechanism for dri ving said disk and keepingit in contact with the driven shell on its forward movement,substantially as described.

9. The combination of the shell having gripping-faces, plate adapted tobear against said gripping-faces, said plate being carried by a pin onthe driven part, with frictional mechanism for forcing the grip-plateagainst the bearing-surfaces while running forward and releasing theplate from the gripping-surfaces when running backward, substantially asdescribed.

10. The combination of the casing of the clutch, having taperedbearing-surfaces 7 i, with a clutch-plate having bearing-lugs 70 70,adapted to said faces of the clutch-casing, and means for operating saidclutch-plate, substantially as described.

11. The combination of the frame A, slotted as described, with a blockadapted to said slot, with a head on said block having a taperedshoulder adapted to rest upon the tapered shoulder of the frame, with apivotpin mounted in said block, carrying the treadle-lever,substantially as set forth.

12. The combination, in a bicycle, of the frame yoked with a bar mountedin said yoke, with a pivot-block retaining the frame and the bar inposition, with a pivot-pin passing through said block and having at itsouter end the operating-lever, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribin g witnesses.

FREDERICK SCHRADER. lVitnesses:

R. SCHLEIOHER, HARRY SMITH.

